Describes operation and equipment. There are 600 incoming circuits, terminating on 60 control positions. Power is supplied by two Crompton motor generators of 13 hp. (See also Electrician, vol. 87, no. 2266, Oct. 21, 1921, pp. 510-514, 7 figs)


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    Title :

    The London toll exchange


    Additional title:

    P. O. Elec. Engrs. Jl


    Published in:

    Publication date :

    1921


    Size :

    10 pages


    Remarks:

    12 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    London toll exchange

    Elliman, E.A. | Engineering Index Backfile | 1928


    The new toll exchange, London

    Engineering Index Backfile | 1928


    Replacement of London Toll exchanges

    Devereux, R.C. / Smith, C.N. | Engineering Index Backfile | 1943


    Birmingham trunk and toll exchange

    Allsup, E.F.W. / Handy, T.A. | Engineering Index Backfile | 1937